If you’re talking this one:
https://outermart.com/products/trop...tlqbW5AIVPx6tBh3g7gxkEAQYDCABEgLLGPD_BwEI didn’t care for it for the weight, but it was fairly accurate for sighting in. I was able to dial in 350 spine with 100 grain tips and heads in one session, and repeat.
My opinion- the mechanics were somewhat binding, didn’t move as freely as an HHA type sight. There were a lot of hardware heads to keep tight as well.